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Preparation method and application of fish feed antioxidant based on ginkgo leaf extracts and application

A technology of antioxidants and extracts, applied in the preparation and application of fish feed antioxidants based on ginkgo biloba extracts, can solve problems such as toxic and side effects, and achieve the effect of increasing growth rate and feed intake

Inactive Publication Date: 2018-12-18
NEIJIANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method and application of fish feed antioxidant based on Ginkgo biloba extract. Fish feed formulated with antioxidants will not cause the residue and enrichment of synthetic antioxidants in fish products, which can improve the quality and food safety of fish products

Method used

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  • Preparation method and application of fish feed antioxidant based on ginkgo leaf extracts and application
  • Preparation method and application of fish feed antioxidant based on ginkgo leaf extracts and application
  • Preparation method and application of fish feed antioxidant based on ginkgo leaf extracts and application

Examples

Experimental program
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Effect test

Embodiment 1

[0039] A method for applying ginkgo biloba extract as fish feed antioxidant, the following steps are carried out in sequence:

[0040] 1. Obtain 1000 g of fresh ginkgo leaves, dry them in a blast drying oven at 50° C. to constant weight, crush them through a 18-mesh sieve, and obtain dry ginkgo leaves powder.

[0041] 2. Take 4 parts of ginkgo leaf powder, 200g each, and put them into 4 containers. According to the mass ratio, add petroleum ether, ethyl acetate, ethanol and distilled water at a ratio of 1:9 between ginkgo leaf powder and solvent, and use a rotary agitator to Mix and stir at room temperature at 800rpm / min for 6 hours, and repeat the extraction 3 times. Filter the mixture with Bush funnel and medium-speed qualitative filter paper to obtain a clear residue-free filtrate. The filtrates were respectively placed in a rotary evaporator and distilled under reduced pressure to constant weight to remove the solvent to obtain Ginkgo biloba petroleum ether extract, Ginkg...

Embodiment 2

[0058] On the basis of Example 1, continue to operate as follows:

[0059] 4. According to the feed formula, 4 kinds of extracts of Ginkgo biloba were added to feed raw materials at concentrations of 0 and 1 g / kg feed and mixed to make pellet feed with a diameter of 2 mm.

[0060] Feed formula:

[0061]

[0062] In this feed formula, fish meal is a self-made raw material without any additives;

[0063] Soybean meal content ≥ 99%, food grade;

[0064] Among the vitamin supplements, each kilogram of vitamin supplements contains: retinol (500,000IU / g) 0.80g, vitamin D 3 (500,000IU / g) 0.48g, DL-α-tocopherol (50%) 20.00g, vitamin K 3 (23%) 0.43g, Vitamin B 1 (90%) 0.11g, riboflavin (80%) 0.63g, pyridoxine (81%) 0.92g, cyanocobalamin (1%) 0.10g, D-calcium pantothenate (90%) 2.73g, niacin (99%) 2.82g, D-biotin (2%) 5.00g, inositol (99%) 52.33g and folic acid (96%) 0.52g;

[0065] In mineral additives, each kilogram of mineral additives contains: FeSO 4 ·7H 2 O (containing ...

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Abstract

The invention discloses application of ginkgo leaf extracts to preparation of a fish feed antioxidant, and a preparation method of the ginkgo leaf extracts. The preparation method and application of the fish feed antioxidant based on the ginkgo leaf extracts and application disclosed by the invention have the advantages that the ginkgo leaf extracts are used as the fish feed antioxidant; , so thatthe problem of toxic and side effects caused by the existing synthetic antioxidant on animals can be solved; fish feed prepared from the antioxidant cannot cause the residue and enrichment of the antioxidant in fish meat products; the quality and food safety of the fish meat products can be improved.

Description

technical field [0001] The invention relates to a preparation method and application of a fish feed antioxidant based on ginkgo biloba extract. Background technique [0002] The oil content in fish feed is high and rich in unsaturated fatty acids. Under the action of reactive oxygen species (ROS) and excessive metal ions, unsaturated fatty acids are easily oxidized, and characteristic oxidations such as peroxide (PO), conjugated diene (CD) and malondialdehyde (MDA) are produced during the oxidation process. product. Lipid oxidation will destroy the nutritional content of the feed, make the smell, color and palatability worse, and produce toxic and harmful substances and shorten the shelf life of the feed. Feeding oxidized and degraded feed will lead to problems such as stunted growth, reduced disease resistance, poor meat quality and increased mortality of farmed fish. Therefore, antioxidants are indispensable additives in feed production. [0003] At present, the antiox...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23K50/80A23K10/22A23K10/37A23K10/30A23K20/158A23K20/26A23K20/174A23K20/20A23K40/10
CPCA23K10/22A23K10/30A23K10/37A23K20/158A23K20/174A23K20/20A23K20/26A23K40/10A23K50/80Y02A40/818Y02P60/87
Inventor 李华涛吴敏龙娇周思顺唐思忆
Owner NEIJIANG NORMAL UNIV
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